New member...Help with burning metallic smell

[diesle1]

Hey guys,
I'm new to the forum.. I just purchased a 2010 x5m with 16k on it. The first night I pulled into the garage I noticed a burning metallic smell coming from under the hood.
I took it to the dealer and they said they couldn't duplicate the smell. After a lengthy discussion with a service manager he thinks that it's normal for there to be a smell due to the high heat from the turbos and placement of the cat. converters under the hood. I'm finding it hard to believe that any burning smell is normal. Can anyone shed some light on this for me??
thanks